var mongoose = require('mongoose');
var News = require('../models/news.model')//引数据模型；


//新增
exports.create = function(req,res,next){
    var news = new News(req.body);
    news.save()
    .then(data=>{
        res.json(data)
    })
}

//修改
exports.update = function(req,res,next){
    
      var id = req.params.id; // req.param('id')
      // 现在操作的都是mongoose而不是mongodb
      News.findByIdAndUpdate(id,{$set: req.body}, {new:false} )
      .then(data=>{
          res.json({msg:'数据修改成功',status:200}); // 如果你要返回数据，这个data返回的是你之前修改的那个数据内,
      })
  }

//删除
exports.remove = function(req,res,next){
	var id = req.params.id;
	News.findByIdAndRemove(id,function(err,doc){
		res.json({msg:'数据删除成功',status:200})
	})
}

exports.list = function(req,res,next){
    var page = (req.body.page) ? req.body.page : 1;
    var limit = (req.body.limit) ? req.body.limit : 4;

    var queryCondition = {};
    var title;
    if( req.body.title && req.body.title.trim().length>0 ){
        title = req.body.title;
        queryCondition = {"title":new RegExp(title,'i')}
    }
	
	if(req.body.cateId && req.body.cateId.trim().length>0){
		cateId = req.body.cateId;
		queryCondition = {
			"cateId" : cateId
		}
	}

    News.paginate(queryCondition, { page: page, limit: limit }, function(err, result) {
       result.rows = result.docs;
       delete result.docs;

       res.json(result)
    });
}